This straight barbell is made from 316LVM ASTM F-138 implant grade Stainless Steel and has stainless steel ball ends. Hand made in the USA and polished to a mirror finish by Body Circle Designs. Internally threaded for comfort during insertion and has countersunk ends for a precision fit. Choose from a variety of gauges, lengths and ball sizes. 16g through 8g go all the way up to 2" in length and are perfect for industrial piercings or male piercings. Other end sizes are available. Please see related products to build your own. Also available in 8g to 1/2". Please see related products. You can see the standard ball end sizes below: